The standard QAOA approach applied to combinatorial search was discussed in detail in [1]}. For a given cost function, it starts from a superposition ideally equally distributed among all possible candidate solutions, i.e.
\(|\psi _0\rangle =|\mathcal {F}|^{-\frac{1}{2}} \sum _{s\in \mathcal {F}} |s\rangle \) 
